KR200218373Y1 - Castable blocks for furnace post pipes - Google Patents

Abstract

The present invention is to form a cooling water flow path to prevent breakage by heat due to the inside of the high-temperature heating furnace to direct the castable to block the heat transfer from the heating furnace to the skid pipe and postpipe fixed to be connected to each other Instead of construction, it is made of semi-circular shape, and embossed and engraved on the upper and lower surfaces and the circumferential end faces respectively to enable stable operation of the heating furnace, and shorten the time during repair to improve productivity. A castable block for a low post pipe, which is mounted on a post pipe, is formed in a semicircular shape, and has a sloping protrusion 22 and a recess 23 in a circumferential direction so as to have an embossment and an intaglio in the longitudinal upper and lower ends thereof, respectively. Formed continuously, and the outer surface portion of the upper side and the outer surface portion of the body 173 at the circumferential end The jaw 24 and the recess 25 are formed continuously in the longitudinal direction, respectively, so as to have an embossed and engraved to be matched.

Description

Castable blocks for furnace post pipes

The present invention relates to a castable block fixed to an outer surface side of a post pipe that is installed inside a heating furnace and supports a skid pipe or the like for moving a material on top thereof, and more particularly, is mounted outside the post pipe. Instead of constructing the castable directly to block heat transfer from the furnace, it is made of semi-circular shape and embossed and engraved on the upper and lower surfaces and the end surface in the circumferential direction to enable stable operation of the furnace, and during repair The present invention relates to a castable block for a post pipe with a heating that is shortened in time and improves productivity, and particularly maintains a tightly coupled state even when the slab is moved due to high heat and moved.

In general, the furnace equipment used in the steel industry uses 1,300 materials to maximize the ductility of steel before rolling the slab, bloom, billet, etc. produced in the casting process into the rolling process. It is a facility for heating to a high temperature of ℃ or more, and consists of a preheating zone, a heating zone and a cracking zone.

The configuration for allowing the material loaded in the furnace to move through the preheating zone, the heating zone, and the cracking zone is schematically illustrated in FIG. 1, which is located in the interior of the furnace 120 having the chimney 110. The preheating stand 141, the heating stand 142, and the cracking stand 143 are set in order from the inlet 131 to the material extraction port 132, and the working cost in the longitudinal direction is located at the inner lower portion of the heating furnace 120. 150 is installed in a plurality of rows so that the working beam 150 is moved in the longitudinal direction by the hydraulic cylinder 156.

In addition, an eccentric cam 152 is rotatably mounted at every lower portion of the work beam 150 so that the work beam 150 can move a predetermined distance up and down as the eccentric cam 152 rotates. And, at least one of the eccentric cam 152 is connected to the electric motor 154.

The movable post pipe 160 is fixed vertically upwards at a predetermined interval in the upper longitudinal direction of the working beam 150, and the movable skid pipe 170 is fixed to the upper end of the movable post pipe 160. Therefore, the movable skid pipe 170 can be moved up and down and left and right by the electric motor 154 and the hydraulic cylinder 156.

Meanwhile, as shown in FIG. 2, fixed skid pipes 172 are formed between the movable skid pipes 170, and the fixed skid pipes 172 are provided on the lower side. A plurality of fixed post pipes 162 having a predetermined length are fixed, and the fixed post pipes 162 are fixed to the upper part of the furnace bottom 180 constructed as a castable, unlike the movable skid pipes 170, fixed skids. Pipe 172 is a fixed configuration.

Of course, the furnace floor 180 is constructed so as to block the upper portion where the material is moved, and the lower portion to which the electric motor 154 and the hydraulic cylinder 156 are mounted, and the furnace floor 180 includes the electric motor 154. ) And the moving post pipe 160 connected to the hydraulic cylinder 156 so that the moving skid pipe 170 can be moved up and down and back and forth, and do not interfere with the up and down and forward and backward movements of the moving post pipe 160. A hole 182 is formed to which extent the size is set.

That is, the material 190 is charged into the heating furnace 120 through the material charging hole 131, and the material 190 is disposed on the upper surface of the skid pipes 170 and 172 installed in a plurality of rows in the longitudinal direction. When the preheating is completed at the proper temperature in the preheating stage 141 which is the first stage, the electric motor 154 is driven, and the eccentric cam 152 rotating by the driving of the electric motor 154 is moved skid pipe. At the same time to raise the 170 and at the same time operating the hydraulic cylinder 156 to move the work beam 150 in the material flow direction, the moving skid pipe 170 connected thereto moves little by little toward the heating table 142.

In this continuous operation, the material 190 may be transferred to the next process through the material extraction hole 132 through the preheating zone 141, the heating zone 142, and the cracking zone 143.

On the other hand, in the connection configuration of the skid pipes 170, 172 and the post pipes 160, 162 provided in the heating furnace 120, as shown in FIG. Pipe-shaped steel bodies 163 and 173 each having a cooling water flow path P formed therein in the longitudinal direction at the center thereof to prevent damage by the heat, so that the internal cooling water flow paths P are connected to each other. It is fixed by welding, etc., the upper side of the skid body 173 is formed so that the skid hutton 174 is protruded a predetermined length, the outer surface portion of the body 163, 173 has a castable support anchor ( Fixing a plurality of 164 to cover the heat insulating material 165 made of wool (Wool), etc. In this state, the castable 166 is installed on the outer surface to a predetermined thickness.

Of course, when the castable 166 is installed, the upper end of the skid button 174 is constructed to protrude slightly outward.

However, the skid pipe and the post pipe by the integrated castable construction method require excessive construction time due to the complicated process for constructing the same. Furthermore, the workability in the narrow heating furnace is very poor, which greatly increases the workload. In addition, since the castable must be removed during the maintenance work, the workability is very poor, and a large amount of dust is generated during the dismantling work, and thus has many problems.

Various techniques have been proposed to solve these problems in the related art, and a representative representative technique is a split castable block called a circle block 200 as shown in FIG. It is made to combine with each other and stacked in a vertical direction to form a post pipe.

However, the circle block 200 is composed of only the concave hooks 212 formed on the upper and lower sides of both ends of the inner bar shell 210 to connect and couple each other in the circumferential direction, and the upper and lower blocks adjacent to each other. Since there is no means for connecting to each other, when the thermal deformation caused by the high temperature inside the heating furnace occurs in the latch 212 of the shell 210, the circle block 200 is opened, whereby the post The problem that the heat of the heating furnace penetrates inside the pipe and the skid pipe causes a large accident that damages the facility.

The present invention has been made in order to solve the above-mentioned conventional problems, the object of the caster is coupled to the outer surface side of the post pipe in the furnace to easily move the material such as slab charged in the furnace to the furnace exit. Blocks are formed not only in the vertical direction but also in the circumferential direction, and form a stone jaw and a recess having an embossed and intaglio, and thus, the coupling structure between the castable blocks is firm, and thus the mechanical stress due to the high thermal expansion stress and the slab In order to provide a castable block for a furnace post pipe while maintaining a coupled state, the castable block can be easily mounted and disassembled to achieve stable operation of the furnace.

1 is a schematic configuration diagram showing a general heating furnace.

2 is a schematic block diagram showing the configuration of a skid pipe and a post pipe of a general heating furnace.

3 (a) and (b) are cross-sectional configuration diagrams showing the construction state of a conventional skid pipe and a post pipe.

4 is a schematic block diagram showing a conventional circle block,

(a) FIG.

(b) is a state diagram coupled to each other in the circumferential direction.

(c) is a state diagram mounted in the longitudinal direction.

5 (a) and (b) is a cross-sectional view showing the construction of the skid pipe and post pipe using a castable block according to the present invention.

6 is a schematic block diagram showing a castable block according to the present invention,

(a) FIG.

(b) is a state diagram coupled to each other in the circumferential direction.

(c) is a state diagram which couples with each other in the longitudinal direction.

Figure 7 is a repair work of the facility equipped with a castable block according to the present invention.

* Explanation of symbols for main parts of the drawings

10: post pipe 20: castable block

22,24: Jaw 23,25: Groove

50: seat block 163: post body

170: skid pipe P: coolant flow path

As a technical configuration for achieving the above object, the present invention is to form a cooling water flow path (P) to be connected to each other by forming each of the cooling water flow path (P) to prevent breakage by the heat located inside the high temperature heating furnace of the equipment In the semi-circular heating furnace post pipe Woong castable block, which is mounted on the outer surface side of the skid pipe and the postpipe, and in which the jaws and the grooves are formed at the circumferential end thereof in a longitudinal direction, the pipe direction is a castable block. Stone jaws and grooves formed continuously in the longitudinal direction at the end are inclined and intaglio, respectively, which are inclined portions to be closely engaged with each other to increase coupling force, and the upper and lower ends of the castable block are inclined portions that are mutually matched and increase coupling force. The stone jaw and the groove having the embossed and intaglio are continuously formed in the circumferential direction, respectively. By providing a castable block for a post pipe with a heating configured to maintain a tightly coupled state during thermal expansion due to high heat and mechanical impact due to the slab.

Hereinafter, embodiments of the present invention will be described in more detail with reference to the accompanying drawings.

5 is a schematic configuration diagram illustrating a connection portion between a post pipe 10 and a skid pipe 170 on which a castable block for a post pipe caster according to the present invention is mounted. The pipe-shaped steel bodies 163 and 173 each having a cooling water flow path P formed therein in the longitudinal direction at the center thereof to prevent damage by the “T” shape so that the internal cooling water flow paths P are connected to each other. It is fixed by welding or the like, and the skid button 174 is formed to protrude a predetermined length to the upper side of the skid body 173, and the castable support on the outer surface of the upper side of the body 163 and the outer surface of the body 173. A plurality of anchor anchors 164 are fixed to cover the heat insulating material 165 made of wool, and in this state, the construction of the portion to be constructed with a predetermined thickness on the outer surface provided with the anchors 164 is provided. Similar to the conventional (water , And then substantially in the order of the construction castable 20 of the present design is the first unit mounted on the outer surface of the post body 163, and thereby the work).

In the present invention, the castable block 20 is mounted on the outer surface of the post body 163 of the portion where the castable 166 is not constructed.

The castable block 20 is made of a semi-circular shape to have the same inner diameter as the outer diameter of the heat insulating material 165, as shown in more detail in Figure 6, the thickness so that the high heat of the heating furnace can be blocked to an appropriate degree Is set.

The castable block 20 continuously forms in the circumferential direction the stone jaw 22 to have an inclined portion with an embossed portion in the center of the upper surface, the inclined portion of the intaglio corresponding to the stone jaw 22 in the center of the lower surface The groove 23 to have is formed continuously in the circumferential direction.

In addition, the castable block 20 is formed continuously in the longitudinal direction with a stepped bump 24 to have an inclined portion at the center at one side of the end of the circumferential side in the longitudinal direction, and at the center of the end of the stepped 24 The groove 25 is formed continuously in the longitudinal direction to have an inclined portion of the intaglio.

In order to mount such a castable block 20 to the outer surface portion of the heat insulating material 165 coated outside of the post body 163 and more strictly outside of the post body 163, first, a castable The block 20 is positioned on the outer surface of the heat insulator 165, and then the other castable blocks 20 are inserted into each other's grooves 25 so that the other jaw blocks 24 are fitted in the other grooves 25 in the circumferential direction of the heat insulator 165. Wrap the outside.

In order to wrap the longitudinal direction of the heat insulator 165 in the castable block 20 of the present invention, the same operation as that for wrapping the circumferential outer side is continuously performed on the upper side of the already mounted castable block 20. Of course, in this case, the jaw 22 of the castable body 20 should be fitted in the recess 23 of the adjacent castable body 20, and thus, the post body 163 may have a fifth position. As shown in the figure, all of the circumferential direction and the longitudinal direction are easily and quickly enclosed by the castable body 20.

The castable body 20 mounted in this way is firmly coupled to each other while the inclined portions of the castable body 20 closely inclined with each other in an embossed and engraved manner, and are embossed and engraved with each other even in a circumferentially adjacent portion. Since the inclined portion of the closely coupled to each other, the outer surface of the castable body 20 is firmly coupled to the fall is not easy.

Therefore, the construction time and the workload of the castable block of the present invention are significantly reduced as compared with the prior art, and the maintenance of the facility is easy because high temperature outdoor air does not penetrate the post body 163 by the firm coupling action of each other. .

Of course, when the castable block 20 of the present invention is mounted, the castable block fixing seat block 50 is mounted on an appropriate lower outer surface of the post body 163, such a seat block 50. In order to facilitate the installation of the castable block 20 by forming a stepping wall 52 corresponding to the groove 23 of the castable block 20, it will be avoided the description and illustration here, but According to the technical concept, the castable block 20 may be positioned at the lower side of the caster 22 differently from the above, and in this case, the seat block 50 may also match the protrusion 22 at the upper surface thereof. It is natural to form a groove (not shown).

On the other hand, when a plurality of castable blocks 20 of the present invention are installed in the longitudinal direction of the post pipe, the skid pipes are moved little by little in the clockwise or counterclockwise direction with respect to each other in the circumferential direction. It is preferable to distribute the load transmitted by the upper structure such as 170 uniformly in the circumferential direction of the castable block 20.

6 (b) and 6 (c) show the circumferential coupling and the vertical coupling state of the castable block 20, respectively. FIGS. 7 (a) to 7 (c) show the casters according to the present invention. After the block 20 is used for a certain period of time in the construction state showing the operation method of dismantling according to the need, such as repair, remove the castable which is constructed only on the upper one side of the post pipe using the tool 70, The castable body 20 is then removed one by one, and after all these operations are completed, the new castable body 20 is simply and quickly continued to the outer surface of the post body 163 in the circumferential and vertical directions. The castable can then be installed on the upper part of the post pipe and the skid pipe.

Accordingly, the stepping blocks 22 and 24 and the grooves 23 and 25 are formed to have the inclined portions of the embossed and the intaglio in the upper direction and the circumferential direction so that the castable block 20 is formed on the outer surface side of the post pipe. By combining, even if the thermal expansion caused by the high temperature of the heating furnace is generated or the moving slab collides, the bonding state of the castable blocks is maintained firmly.

Thus, according to the present invention castable block for the heating post pipe, the castable blocks are coupled to the outer surface side of the post pipe in the heating furnace to easily move the material, such as slabs charged in the heating furnace to the furnace exit. As well as up and down direction, in particular, in the circumferential direction, by forming a stone jaw and groove having an embossed and intaglio, the coupling structure between the castable blocks is firmly secured to the expansion stress due to high heat and mechanical impact due to the slab While being maintained, the castable block can be easily mounted and dismantled to have an excellent effect of achieving stable operation of the heating furnace.

Claims (1)

Cooling water flow paths (P) formed inside the heating furnace to prevent damage by the heat formed inside the high-temperature heating furnace is mounted on the outer surface side of the skid pipe and postpipe of the heating furnace equipment fixed to be connected to each other in the circumferential direction In the semicircular heating furnace castable block in which the jaws 24 and the grooves 25 are formed in the longitudinal direction to be consistent with each other at the end thereof, the castable block for the post pipe, in the longitudinal direction at the distal end of the castable block 20. Continuously formed stone jaw (24) and the groove 25 is inclined to each other in close contact with each other to form an embossed and intaglio, respectively, and the upper and lower ends in the longitudinal direction of the castable block 20 is matched with each other and the coupling force The height of the inclined part of the jaw 22 and the groove 23 having the intaglio and intaglio are formed continuously in the circumferential direction, respectively, due to the thermal expansion and the slab due to the high heat of the heating furnace. Mechanical shock upon engagement state is firmly post by heating characterized in that consisting of ever holding pipes castable blocks.